Christopher S. Cook
Christopher S. Cook: President, Products Division at Ultra Clean. What Christopher S. Cook holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.
Ultra Clean (UCTT)
Christopher S. Cook holds 102,226 Ultra Clean shares (0.23% of the company), worth about $6.7M at the last price, according to the Form 4 of Aug 31, 2026.
- Shares held: 98,126 (0.22%), $6.4M — Held in their own name.
- Shares held: 4,100 (0.01%), $267,771.00 — Held through trusts (by Trust).
Declarations
- Ultra Clean (UCTT) — Form 4 of Aug 31, 2026 (President, Products Division): shares withheld for tax of 12,497 at $67.83; 102,226 shares after 0000950103-26-013530
- Ultra Clean (UCTT) — Form 4 of May 22, 2026 (President, Products Division): grant or award of 13,196; 114,723 shares after 0000950103-26-007863
- Ultra Clean (UCTT) — Form 4 of May 4, 2026 (President, Products Division): open-market sale of 10,247 at $73.89; open-market sale of 1,231 at $74.55; 101,527 shares after 0000950103-26-006917
- Ultra Clean (UCTT) — Form 4 of Apr 30, 2026 (President, Products Division): shares withheld for tax of 1,861 at $78.15; shares withheld for tax of 4,181 at $78.15; 113,005 shares after 0000950103-26-006811
- Ultra Clean (UCTT) — Form 4 of Aug 29, 2025 (President, Products Division): grant or award of 73,686; 134,115 shares after 0000950103-25-011240
- Ultra Clean (UCTT) — Form 4 of Apr 30, 2025 (President, Products Division): shares withheld for tax of 1,855 at $18.71; shares withheld for tax of 2,225 at $18.71; 60,429 shares after 0000950103-25-005713
- Ultra Clean (UCTT) — Form 4 of Apr 25, 2025 (President, Products Division): grant or award of 27,831; 67,059 shares after 0000950103-25-005447
- Ultra Clean (UCTT) — Form 4 of Mar 7, 2025 (President, Products Division): open-market purchase of 4,100 at $25.30; 39,228 shares after 0000950103-25-003280
Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.
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